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<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <script>
        //(条件)?表达式1：表达式2
        var num = 10;
        //判断num是奇数还是偶数
        //if...else
        if(num % 2 == 0){
            console.log("偶数");
        }else{
            console.log("奇数");
        }

        //三元运算符
        (num % 2 === 0) ? console.log("偶数") : console.log("奇数");

        var result = num % 2 === 0 ? "偶数":"奇数";
        console.log(result);
    </script>
</body>
</html>